From 7f009833770cb819d3bc26c2e24b23cd13ef8918 Mon Sep 17 00:00:00 2001
From: btobab <btobab@126.com>
Date: Tue, 23 Sep 2025 22:32:48 +0800
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---
 .../serviceImpl/StackerTaskServiceImpl.java   | 24 ++++++++++++++-----
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/202504-Wms-MengYang-tp/wms_serve_mengyang/src/main/java/com/wms_main/service/business/serviceImpl/StackerTaskServiceImpl.java b/202504-Wms-MengYang-tp/wms_serve_mengyang/src/main/java/com/wms_main/service/business/serviceImpl/StackerTaskServiceImpl.java
index 0e2b74a..6addcac 100644
--- a/202504-Wms-MengYang-tp/wms_serve_mengyang/src/main/java/com/wms_main/service/business/serviceImpl/StackerTaskServiceImpl.java
+++ b/202504-Wms-MengYang-tp/wms_serve_mengyang/src/main/java/com/wms_main/service/business/serviceImpl/StackerTaskServiceImpl.java
@@ -1,4 +1,4 @@
-package com.wms_main.service.business.serviceImpl;
+package com.wms_main.service.business.serviceImpl;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
@@ -101,7 +101,7 @@ public class StackerTaskServiceImpl implements IStackerTaskService {
      * @return 申请到的库位，null表示无库位可用
      */
     @Override
-        public TAppLocation requestOneLocation(TAppLocation locationFilter, String requestVehicleId) {
+    public TAppLocation requestOneLocation(TAppLocation locationFilter, String requestVehicleId) {
         // 目标库位
         TAppLocation targetLocation = null;
         // 设备号优先级序列
@@ -148,10 +148,11 @@ public class StackerTaskServiceImpl implements IStackerTaskService {
                     }
                 }
                 return filterResult;
-            }).sorted(Comparator.comparingInt(TAppLocation::getLRow)
-                    .thenComparingInt(TAppLocation::getLCol)
-                    .thenComparingInt(TAppLocation::getLLayer))
-                    .toList();
+            }).collect(Collectors.toList());
+            int maxCol = locationList.stream().mapToInt(TAppLocation::getLCol).max().orElse(86);
+            candidateLocationList.sort(Comparator.comparingInt(TAppLocation::getLRow)
+                    .thenComparingInt(loc -> computeColOrder(loc.getLCol(), maxCol))
+                    .thenComparingInt(TAppLocation::getLLayer));
 
             // 若指定了 subArea，则基于上述排序优先同 subArea 的库位
             if (locationFilter != null && StringUtils.isNotEmpty(locationFilter.getSubArea())) {
@@ -349,6 +350,17 @@ public class StackerTaskServiceImpl implements IStackerTaskService {
         }
         return result;
     }
+    /**
+     * 列排序权重：以列数中点为中心（86列 => 中点在43/44之间），
+     * 先靠近中点的列优先，等距时优先左侧（43）再右侧（44）。
+     * 计算采用整数运算：distance2 = |col*2 - (maxCol + 1)|。
+     */
+    private int computeColOrder(int col, int maxCol) {
+        int centerTimes2 = maxCol + 1; // 偶数列的两个中心之和（如86=>87）
+        int distance2 = Math.abs(col * 2 - centerTimes2); // 与中心的“距离”×2
+        int side = (col <= centerTimes2 / 2) ? 0 : 1;     // 左侧优先（43 再 44）
+        return distance2 * 2 + side;                      // 组合为稳定的权重
+    }
 
     /**
      * 找到最空闲的那台设备